Christian wais



(No Modl.)

C. WAIS.

SHEET METAL SHEARING MACHINE. N0. 373,033. v Patented Nov. 8, 1887.

1 if J[ I G l O PIER.

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. UNITED. STATES CHRISTIAN VVAIS,

PATENT OFFICE.

OF CINCINNATI, OHIO, ASSIGNOR TO WATS & ROOS, OF

SAME PLACE.

SH EET-METAL-SHEARING MACHINE.

ffiPECIl-ICATION forming part of Letters Patent No. 373,033, dated November 8, 1887.

Application filed March 28, 1887. Serial No. 232,728. (No model.)

To all whom it may concern:

Be it known that I, CHRISTIAN Wars, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Sheet -Metal Shearing Machines, of which the following is a specification.

My invention relates to improvements in that class of metalshearing machines in which a vertically-reciprocating shear beam or gate ismounted at its ends in guides or ways made in the outer ends of arms which overhang a table or frame,upon which they are supported, similar to the shearing-machines heretofore patented to me, viz: No. 271,956, dated February 6, 1883; No. 312,236, dated February V10, 1885, and No. 353,041, dated November 23,

the combination, with the shear beam or gate, moving at its ends in ways or guides in the outer ends ofoverhanging arms on the ma chine-frame, of a system of compound levers 2 for operating the said sheargate by footpower for light Work, arranged at both ends of the machine and composed of a horizontal lever, a verticalrodorlink, and a foot-treadle, pivotally connected together and to the ends of said shear-beam, as hereinafter fully described.

My invention consists, in the second part, in combination with the shear-beam, moving at its ends in guides in the outer ends of overhanging arms on the machine-frame, of a horizontal shaft mounted at its ends in boxes on said overhanging arms vertically above said shear-beam, and provided with an operating handle or lever, and eccentrics or cams mounted o thereon, which latter preferably engage friction-rollers on the shear-beam, and means for returning the shear-beam to its normal position, whereby the machine may be operated by hand-power for heavy work.

Other features of my invention will be fully set forth in the following'description of the accompanying drawings, in which- Figure 1 is an end view of the machine embodying' my improvents; Fig. 2, a front elevation thereof; Fig. 3, an enlarged View, partly in cross-section and partly in elevation, show- My invention consists, in the first part, in'

ing the shear-beam, one ofthe friction-rollers, the hand-shaft, and one of the eccentrics mounted thereon. together with the spring device for sustaining the said shaft, with its eccentrics and hand-lever, 0ut of operative engagement with the shear-gate when the gate is being operated by the foot devices separately, or after each successive cut of the shear; Fig. 4, abroken elevation of one end of 6:: the shear beam or gate; Fig. 5, a plan of the parts shown in Fig. 4; and Fig. 6 a modification in elevation of one end of the machine, showing the means for raising the shear-beam when the hand devices are used exclusively and the foot devices omitted altogether.

A A represent the two opposite frame-legs of the machine; B, the operating-table connecting the two legs and supporting thelower shear-blade, O.

D represents the shear beam or gate, carry-' ing the upper or cutting shear-blade, and provided with tongues or slides d at its ends which enter guides or slots in the outer ends of the overhanging arms E E. 5

e 0 represent notches opening upwardly in the slidetongues d d, to receive thelower pivotal ends of the short links F F, which in turn are pivotally connected at their upper ends with horizontal levers G G, as shown in Figs. 1 and 2.

Levers G are pivotally connected at one end to the outer ends of the overhanging arms E, and similarly connected at their opposite rear ends with the upper ends of vertical rods H H, which in their turn are also likewise connected at their lower ends with the laterally-projecting arms or studs h on the foot-treadle I. The rods H H are preferably made adjustable in length-that is, each in two parts united by ascrew-coupling or yoke, Hso as to adapt the machine to cut narrow or wide sheets with equal facility, as in said former Letters Patent.

It will be seen-in Fig. 1 that I have made 5 the coupling or yoke H somewhat bowed or hollowed out on one side. This I do to per mit a clear passage of the sheets when wide ones are being cut or split in the openings beneath said overhanging arms.

The forward or lower ends of the foot-treadle I, composing the pivotal shaft thereof, are

suitably mounted in journal-boxes or otherwise at the lower front ends of legs A A.

J J are spiral springs, attached at their oppositc ends to the framedegs A and A and the foottreadle I, respectively, and adapted to return the said feot'treadle, shear-beam,and the intervening mechanism to their normal positions after the cutting operation has been performed on each successive sheet.

The horizontal levers G G above mentioned are both connected with the short links F F near their ends-that is, those ends which are pivoted to the overhanging arms-thereby leaving long extensions to the rear for connec tion with the downwardly-pulling rods and foot-trcadle, whereby the cutting operation is facilitated and a most powerful foot-operating machine produced.

In connection with the footpowcr mechanism just described I provide another device, whereby the machine may be operated by foot or hand power independently, or by both in unison, on light or heavy metal, as occasion may require. This other device is composed of the lollowing parts: K is is a horizontal shaftjournaled at its ends in boxes upon the overhanging arms E vertically above the ends of the shear-beam.

L L represent eccentrics keyed or otherwise Suitably secured to shaft K, immediately adjacent said journal-boxes of the shalt, and adapted to be broughtinto contact with the friction-rollers Z l, which arcmountcd in notches m on the shear-beam by means of a hand-lever, N, Set in a socket, O, on said shaft.

It is obvious that the machine can be operated by hand alone bythe last-named devices without the accompanying use of the foot devices, except to bring the shear-beam back to its normal position ready for another out. In lieu of the foot-power devicesand the springs to aid the hand devices in returning the shearbcam to its normal position, as aforesaid, the upper part of the machine, comprising the table, overhanging arms, the shear-beam, and the hand devices, could be made an independent hand-machine by simply placing the coiled springs a so that one end of each engages a hook or eye or both the overhanging arms, and the other end engages another hook or eye at both the projecting ends of the shearbcam, as fully shown in the modification, Fig. 6, thereby providing means for performing such function automaticallyafter each cutting operation.

After the respective cutting operations the hand-lever is turned upward, causing the springcatch n on the cap of one ofthe journal boxes of shaft K to engage the notched lug n on the boss of the adjacent eccentric, and thereby bring and sustain the eccentrics upward out of rigid contact with the shear-gate, thus permitting the gate to rise without hindrance for another stroke.

I claim- 1. In a shearing-machine, the combination, with the shear-beam moving at its ends in guides or ways in the outer ends of overhanging arms on the machine-frame, of a system of compound levers composed of horizontal levers G G, vertical rods H H, a foot-trcadlc, I, and springs J J, pivotal] y connected together, one set at either end ofthc machine and to the ends of the shear-beam, whereby the machine is operated by foot-power, the parts being arranged in the manner and adapted to operate substantially as herein set forth.

2. In a shearingmachine, the combination, with the shear-beam moving at its ends in guides in the outer ends of the overhanging arms on the machine-frame, of a horizontal shaft, K, journaled at its ends in boxes on said overhanging arms vertically above and in line with said shcarbeam and provided with an operating hand-lever, N, and eccentrics or cams L, mounted thercon,which latter preferably cngagc frictioirrollers Z on said shearbcam, and means for returning the shear-beam to its normal position after the respective cuts, whereby the machine may be operated by handpower independently for heavy work, Substantially as herein set forth.

3. In a shcaring-machine, the combination, with the shear-beam D, of the foot devices composed of the foot-trcadlc I, springs JJ, 9

vertical rods or links H H, horizontal levers G G, and short rock links F F, and the hand devices composed of the shaft K, cams or eccentrics L,-hand-lever N, and friction-rollers Z on said shear-beam, arranged, constructed, and adapted to operate by foot and hand power, jointly or separately, substantially in the manner and for the purpose specified.

4. In a shearing-machine, the combination, with the shear beam or gate D, horizontal shaft K, eccentrics L, and hand-lever N, of aspringcatch, a, and notched lug a, constructed, arranged, and adapted to operate substantially as and for the purpose specified.

In testimony of which invention I hereunto set my hand.

CHRISTIAN \VAIS.

\Vitnesscs:

J OHN E. J ones, FRANK L. MlLLwitnn. 

